You sure its 24 hours?... I get impression it resets at a given time, but seems to vary between 3 or 4 hours after a few weeks.

Hello,

yes i am sure it resets after 24h you used the last free video (which are 50 in total, i do 25 for rest packs and 25 for regenerate players condition) so i can be a delay of 1 h depends how fast you move watching the videos.

I also have the problem that even when the 24 hours have elapsed, the videos do not appear for 1-2 more hours, sometimes even more, unless I restart my phone (restarting game is not sufficient). This does not seem to be hardware related since it happened with my old phone also, which was totally different brand/model. It is very annoying.